Drying can or cylinder.



No. 666,477. Patented Jan. 22, l90l A.-A. HUNT|NG.

DRYING CAN 0B CYLINDER.

(Application flied Aug. 11, 1900) (No Model.)

UNZITED STATES ALFRED A. HUNTING, OF SALEM, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO GEORGE S. HOOKER, OF WATERTOWVN, NEW YORK.

DRYlNG CAN OR CYLINDER.

SPECIFICATION forming part of Letters Patent No. 666,477, dated January 22, 1901.

Application filed August 11, 1900. Serial No. 26,547. (No model-l- T all whom i m y 00171087771: preferably made as herein shown and com- Be it known that I, ALFRED A. HUNTING, a prising an open gutter or conductor f, which citizen of the United States, residingin Salem, may he made of angle metal soldered or othercounty of Essex, and State of Massachusetts, wise secured to the inner circumference of 5 have invented an Improvement in Drying the can and which may be arranged, as here- Oans or Cylinders, of which the following dein shown, in the form of a spiral which exscription, in connection with the accompanytends from near one head, as c, to near the ing drawings, is a specification, like letters other head I). The gutter or conductor may on the drawings representing like parts. be given one or more turns of the spiral, as 10 This invention relates to drying cylinders shown in Fig. l, and for the best results the or cans such as now commonly employed in saidgutter may be made of gradually-increaspaper, textile, and other mills, and has for ing size from the inlet end to its discharge its object to provide the said cylinders or cans end and preferably communicates at its diswith means whereby the water of condensacharge end with a reservoir or pocket It, (see 15 tion may be continuously removed substan- Fig. 4,) which may be triangular in shape tially as fast as formed while the can is in opand extend radially toward the longitudinal eration. For-this purpose the can or cylinaxis of the cylinder, where it communicates der is provided on its interior with an ejecwith a discharge-pipe 2', extended into the tor, preferably made in the form of a spirallyhollow trunnion d. The radial pocket or ms 20 arranged open gutter or conductor, which is ervoirh may, and preferably will, be provided attached to the interior circumference of the with a lateral extension j, formed by the top can and for the best results communicates plate It, gutter f, and side wall m, and which with a reservoir or pocket provided with a extension forms an enlargement of the resersuitable discharge or outlet pipe, which may voir to take care of a large volume pf water 25 project into a hollow trunnion of the can. and prevent its being returned into the cyl- The spiral gutter or conductor may extend inder or can during the rotation of the can. from the center toward the opposite ends of The spiral gutter is preferably secured to the the can; but I prefer to have the conductor can or cylinder substantially at a pitch of or gutter start at one end of the can and make forty-five degrees. 0 one or more turns toward the opposite or dis- In operation the steam admitted into the charge end of said can. I may prefer also to drying can or cylinder is condensed by the make the spiral gutter or conductor of incool or wet material passing about the outcreasing size from what may be termed its side of the can, and the water of condensawater-inlet end toward its discharge end tion is picked up by the spiral gutter as the 5 to thereby take care of the increasing volume can revolves and is retained therein and carof water as the latter is picked up and conried toward the discharge end, where it enveyed toward the discharge end of the can or ters the reservoir or pocketand is ejected cylinder. These and other features of this out through the discharge-pipe z'. The Wainvention will be pointed outin the claims at ter of condensation is thus ejected from the 40 the end of this specification. drying cylinder or can substantially as fast Figure l is a longitudinal section'of a dryas formed, and as a result condensation of ing can or cylinder-embodying thisinvention; the steam is diminished, and the formation Fig. 2, a cross-section on the line 2 2, Fig. 1; of air films or bubbles next to the metal cy- Fig. 3, a sectional detail on the line 3 3, Fig. lindrical body of the can is avoided or at 5 1; and Fig. 4:, a cross-section on the line 4 4, least reduced to a minimum, and the loss of Fig. 3. heat, due to the heat passing to the water of The drying cylinder or can herein shown as condensation and out through the dischargeembodying this invention comprises the cypipe, is reduced to a minimum, While a maxilindrical body a and heads I) 0, provided with mum percentage of the heat passes out I00 50 the hollow trunnions d e. The cylinder or through the metal bodyof the cylinder to the can is provided within it with a water-ejector, material on the outside thereof.

The can or cylinder represented in Fig. 1

may be supposed to be of maximum length, approximating one hundred and fifty-six inches, and with a can of such length the.

gutter will preferably be given one or more turns of the spiral. In some mills cans or cylinders of materially less length but of increased diameter are employed, such cans beingfrequentlyaboutfiftyinches longand from fortyeigl1t to ninety-six inches in diameter, and with this latter class of cans or cylinders the gutter may not be given a complete turn of the spiral owing to the size of the can or cylinder.

It is to be observedthat the gutter is provided with a wall which is substantially parallel with the inner circumference of the can or cylinder and forms an open gutter which extends toward the discharge end of the cylinder, so that as the cylinder is rotated the water of condensation is picked up by the cylinder, of an ejector for water of condensation spirally arranged within said can or cylinder in the direction of the length of the same and provided with a wall cooperating with the inner circumference of the cylinder to form opposing sides of a gutteror channel, and a reservoir within the can communicating with the outside thereof and into which the water of condensation is carried by said ejector, substantially as described.

3. The combination with a drying can or cylinder, of a spirally-arranged gutter or conductor attached to the inner side of the can and open toward the discharge end of the cylinder or can, and a discharge-pipe with which said gutter communicates, substantially as described.

4. The combination with a drying can or cylinder provided with a hollow trunnion, of a dischargepipe communicating with said trunnion, and a spirally-arranged open gutter or conductor on the inside of the can or cylinder and communicating with said dischargepipe, substantially as described.

5. The combination with a drying can or cylinder, of a spirally-arranged gutter within the said can or cylinder open toward the discharge end of said cylinder, a radially-extended reservoir with which said gutter communicates, and a discharge-pipe extended from said reservoir to the outside of said can, substantially as described.

6. The combination with a. drying can or cylinder, of a spirally-arranged open gutter within the said can or cylinder, a radially-extended reservoir provided with alaterally-extended chamber and with which said gutter communicates,and adischarge-pipe extended from said reservoir to the outside of said can, substantially as described.

7. The combination with a drying can or cylinder, of a spirally-arranged open gutter or conductor extended longitudinally of the said can or cylinder on' the inner side of the same, and a reservoir communicating with the outside of the can and with which the said gutter communicates, substantially as described.

8. The combination with adrying can or cylinder, of a spirally-arranged open gutter within the can and of increasing capacity toward its discharge end, substantially as described.

9. The combination with a drying can or cylinder, of a spirally-arranged gutter attached to the inner circumference of the can and communicating with the outside of the can and open substantially toward the discharge end of the can or cylinder, substantially as and for the purpose specified.

10. The combination with a drying can or cylinder, of an ejector for water of condensation within the cylinder and extended longitudinally thereof at an angle to the longitudinal axis of the said cylinder and provided with a wall cooperating with the inner circumference of the cylinder to form opposing sides of an open gutter, substantially as described.

11. The combination with a drying can or cylinder provided with a steam-inlet and with an outlet for Water of condensation, of a spirally-arranged gutter Within said can or cylinder and open substantially toward the discharge end of the can or cylinder and comm unicating with said wateroutlet, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALFRED A. HUNTING.

Witnesses:

JAS. H. CHURCHILL, GEORGE A. RICHARDS. 

